This study examined the effect of Front-of-package (FOP) labels with voluntary and
mandatory disclosure of added sugar levels for beverages on consumer perceptions of how
healthy the beverages are. Three groups of beverages were investigated: 1) 100% fruit juice
(containing sugar but no added sugar); 2) sugar-sweetened beverages (containing sugar and
added sugar); and 3) diet soft drink (containing no sugar). In general, added sugar information
seems to play an important role in perception of healthfulness of beverages. FOP labels with
mandatory added sugar information led to decreasing perceptions of how healthy beverages with
added sugar were.